Perhaps you should try some spelling variations:
"khoi can tranh snippets" » "khoi canh tranh snippets", "khoi tan tran snippets", "khoi van ranh snippets", "khoa can tranh snippets", "khoi nang tranh snippets", "hoc can tranh snippets", "khoi can tranh slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("khoi can tranh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoi can tranh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi can tranh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi can tranh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.